From patchwork Mon Nov 22 10:41:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: WANG Xuerui X-Patchwork-Id: 12631655 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7B76EC433FE for ; Mon, 22 Nov 2021 11:08:00 +0000 (UTC) Received: from localhost ([::1]:41518 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mp7B1-0002jf-Ed for qemu-devel@archiver.kernel.org; Mon, 22 Nov 2021 06:07:59 -0500 Received: from eggs.gnu.org ([209.51.188.92]:53020) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mp6nQ-00028o-Bc for qemu-devel@nongnu.org; Mon, 22 Nov 2021 05:43:36 -0500 Received: from mail.xen0n.name ([115.28.160.31]:40902 helo=mailbox.box.xen0n.name) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mp6nG-0007id-6k for qemu-devel@nongnu.org; Mon, 22 Nov 2021 05:43:34 -0500 Received: from ld50.lan (unknown [101.88.31.179]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by mailbox.box.xen0n.name (Postfix) with ESMTPSA id AB9C260B02; Mon, 22 Nov 2021 18:42:55 +0800 (CST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=xen0n.name; s=mail; t=1637577775; bh=0th7picu79b9GZssY1KrUJjyQw0OD5pYZVdOTKfzXko=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NfAQ48vQ/vmoD98BocFwvjIvNIiaQPcbkBVl8Ze2DVoNR6iZLr6L+Iv2lioSQh059 o49M+wFYec1ZiS+dn1zquOCcG/LcDzjULyu7A70XbLAlWO3eS39m4R1pCRiLqx9IEh KO+jDLDcapU85CGQ+hNr5In/VmafM6yDQqiPZPII= From: WANG Xuerui To: qemu-devel@nongnu.org Subject: [PATCH v7 25/31] tcg/loongarch64: Implement exit_tb/goto_tb Date: Mon, 22 Nov 2021 18:41:55 +0800 Message-Id: <20211122104201.112695-26-git@xen0n.name> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211122104201.112695-1-git@xen0n.name> References: <20211122104201.112695-1-git@xen0n.name> MIME-Version: 1.0 Received-SPF: pass client-ip=115.28.160.31; envelope-from=git@xen0n.name; helo=mailbox.box.xen0n.name X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , XiaoJuan Yang , Richard Henderson , =?utf-8?q?Philippe_Mathie?= =?utf-8?q?u-Daud=C3=A9?= , Laurent Vivier , WANG Xuerui , =?utf-8?q?Alex_Benn=C3=A9e?= , Song Gao Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: WANG Xuerui Reviewed-by: Richard Henderson --- tcg/loongarch64/tcg-target.c.inc | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc index a806e3352e..2d066a035d 100644 --- a/tcg/loongarch64/tcg-target.c.inc +++ b/tcg/loongarch64/tcg-target.c.inc @@ -980,6 +980,25 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, int c2 = const_args[2]; switch (opc) { + case INDEX_op_exit_tb: + /* Reuse the zeroing that exists for goto_ptr. */ + if (a0 == 0) { + tcg_out_call_int(s, tcg_code_gen_epilogue, true); + } else { + tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A0, a0); + tcg_out_call_int(s, tb_ret_addr, true); + } + break; + + case INDEX_op_goto_tb: + assert(s->tb_jmp_insn_offset == 0); + /* indirect jump method */ + tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP0, TCG_REG_ZERO, + (uintptr_t)(s->tb_jmp_target_addr + a0)); + tcg_out_opc_jirl(s, TCG_REG_ZERO, TCG_REG_TMP0, 0); + set_jmp_reset_offset(s, a0); + break; + case INDEX_op_mb: tcg_out_mb(s, a0); break;